![]() This reforestation process requires land. In order to develop more realistic estimates of the amount of land available for reforestation, we recommend clearly defining how abandoned land is categorized, discerning who owns and has rights to use the land, and combining remotely sensed data with household/stakeholder surveys to understand landowner motivations for not cropping or grazing land.Īs the world strives to reduce greenhouse gas emissions, natural forest regrowth and active tree planting are frequently proposed as mitigation pathways to sequester carbon through increases in above- and below-ground biomass and soil organic matter ( Bastin et al., 2019 Cook-Patton et al., 2020). We propose a new conceptualization of abandoned agricultural land that incorporates changes in landholding status over time into determining whether land should be considered as abandoned. ![]() Global mapping efforts to date have relied on vague and oversimplified definitions of “abandoned” agricultural land which results in overestimates of the land area that is likely to support persistent increases in forest cover and associated carbon sequestration. 6Nicholas School of the Environment, Duke University, Durham, NC, United States.5Center for Studies in Demography and Ecology, University of Washington, Seattle, WA, United States.4Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA, United States.3Moore Center for Science, Conservation International, Arlington, VA, United States.2School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States.1Department of Environmental Studies, University of California, Santa Cruz, Santa Cruz, CA, United States.
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